Historical Spatial Radiation Range of the Yongding River Corridor in Beijing Plain Section: Implications for Landscape Patterns and Ecological Restoration

The radiation range of the corridor effect holds great significance for ecological restoration, planning, and sustainable development river corridors. This study focuses on Beijing plain section Yongding River, which has been cut off half a century, improves research methodology. Utilizing land use data from 1967 1980, ArcGIS Fragstats were employed to establish 5 km buffer zones both sides River corridor. zone analysis method was then applied investigate landscape pattern changes. Through SPSS correlation curve fitting, sensitive indices identified, their change characteristics analyzed unveil historical spatial findings this are as follows: First, width increases, changes, showing decrease in heterogeneity, an increase aggregation spread, good connection between dominant patches. Forest exhibited higher levels fragmentation dispersion, cultivated demonstrated improved dominance, construction became more regular dispersed. Second, level within approximately 4 km. inflection point forest found at 3.5–4 km, while land, it occurred 4.5 outcomes can be utilized evaluate impact corridors patterns period ecology. They also provide targeted measures scientific basis protection restoration planning after water flow plain.